/*++

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Abstract:

NMR_ExportStream_Dummy.h defines the ExportStream Dummy class. It will not
store any data written to it, but it will correctly track the seek position and
size of the data. It is designed to be used for measuring the size of the stream.

--*/

#ifndef _NMR_EXPORT_STREAM_DUMMY
#define _NMR_EXPORT_STREAM_DUMMY

#include "Common/Platform/NMR_ExportStream.h"

#include "Common/NMR_Types.h"
#include "Common/NMR_Local.h"
#include "Common/Platform/NMR_ImportStream.h"

namespace NMR {

	class CExportStreamDummy : public CExportStream {
	private:
		nfUint64 m_Size;
		nfUint64 m_Position;

	public:
		CExportStreamDummy();

		virtual nfBool seekPosition(_In_ nfUint64 position, _In_ nfBool bHasToSucceed);
		virtual nfBool seekForward(_In_ nfUint64 bytes, _In_ nfBool bHasToSucceed);
		virtual nfBool seekFromEnd(_In_ nfUint64 bytes, _In_ nfBool bHasToSucceed);
		virtual nfUint64 getPosition();
		virtual nfUint64 writeBuffer(_In_ const void * pBuffer, _In_ nfUint64 cbTotalBytesToWrite);

		nfUint64 getDataSize();
	};

	typedef std::shared_ptr <CExportStreamDummy> PExportStreamDummy;

}

#endif // _NMR_EXPORT_STREAM_DUMMY
